JPH11273812A - Table tap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a table tap which is usable by fixing to a desk or a cabinet of steel, superior in usability, and easy to replace a cable. SOLUTION: Since a magnet 2 is attached to the back part of a table tap body 1, a table tap can be fixed temporarily to a desk of steel by this magnet 2. Also, since a card 52 covered by a transparent cover 53 is stored in a recessed part 51 provided on a surface of a harness plug 11, ratings of the table tap body 1 can be marked on the surface of the harness plug 11. An operating handle of the harness plug 11 is formed to a size which is manually operable, a releasing part is turned and a latch spring is pushed and bent by pushing down the operating handle by a manual operation, and a locked state of core wires of a cable 37 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table tap which is used in an indoor wiring system in which a wiring space is formed by a so-called free access floor and is mainly used for OA equipment.

[0002]

2. Description of the Related Art In an office, power is supplied to an OA device from the above-described outlet provided on the floor surface by connecting a power strip to the power outlet and connecting a plug of each OA device to the power strip. I have. The table tap is used by placing it on a desk or on the floor, or temporarily fixed to a wall surface by using a hole provided in the table tap for hooking a screw. In recent offices, a large number of electrical devices such as computers, word processors, and copiers are used, and so-called wiring flooding due to the routing of a large number of electric wires has become a problem. In order to solve this kind of problem, a flooring material is laid at appropriate intervals on the flooring material, and a free access floor in which the space between the flooring material and the flooring material is a wiring space has conventionally been used. Have been. In an indoor wiring system using a free access floor, a power trunk from the branch breaker built into the distribution board is wired in the wiring space between the floor base material and the floor material, and provided at an appropriate location on the trunk line It has been conceived that a wiring device such as the above table tap is detachably connected to a branch connection portion of the branch connection device. For this reason, there has conventionally been provided a device in which a harness plug removably connected to a branch connection portion of a branch connection device is provided at a distal end of a cable of a table tap. In this harness plug, a recess into which the branch connection portion of the branch connection device is fitted is formed in the front surface of the housing, and the ends of the plurality of blades to which the plurality of core wires of the cable are respectively connected face the recess. The plug blades are inserted and fitted into blade receiving springs provided inside the branch connection device, respectively, to perform electrical connection.

[0003]

However, the power strip can be temporarily fixed to a wall surface other than being placed on a desk or a floor, and may be temporarily fixed to a side surface of a desk on which OA equipment is installed. However, it cannot be temporarily fixed to the side of a cabinet in an office, and has a problem in usability. Also, in this type of harness plug, the cable core is connected to the base end of the blade by caulking, so cable replacement work when the cable length does not match at the site is troublesome. However, there is a problem that workability is poor. Furthermore, since no rating or use is displayed on the harness plug, it is difficult to understand the rating and use of the table tap having the harness plug at the time of wiring construction or maintenance, and there is a problem that workability is poor.

The present invention has been made in view of the above problems, and can be used by temporarily fixing it to a steel desk or cabinet, making it easy to replace cables, and performing wiring work and maintenance. It is an object of the present invention to provide an easy-to-use table tap which sometimes makes the rating and application easy to understand and improves workability.

[0005]

According to the first aspect of the present invention, in order to achieve the above object, the invention is formed between a floor material and a floor material laid at appropriate intervals on the floor material. It is used in an indoor wiring system in which a wiring network is formed by wiring a power trunk in a wiring space and detachably connecting a wiring device to a branch connection part of a branch connection device provided at an appropriate location on the trunk. A table tap body including a plurality of blade insertion holes and a blade receiving bracket corresponding to the blade insertion hole, a cable having a plurality of core wires electrically connected to the blade receiving bracket in the table tap body, and the cable A harness plug provided at the end of the main body and coupled to the branch connection part of the branch connection device, a housing recess for housing the magnet is recessed on the back of the power strip body, and the surface of the magnet is located in the housing recess. Back and fitted with a removably magnet to be substantially flush strip body,
In the harness plug, a recess into which the branch connection portion of the branch connection device is fitted is formed in the front surface of the housing, and a plurality of core wires of the cable are respectively connected to the base ends of the recesses in the recess. The cable insertion holes are formed at the rear end of the housing to insert the cores of the cables, and the contact pieces that come into contact with the cores of the cables inserted through the cable insertion openings are formed at the base ends of the respective blades. A plurality of lock springs for elastically holding the core wire between the contact pieces and a release button for releasing the lock state of the core wire by pushing the lock spring away from the contact pieces, and the release button The handle is exposed on the surface of the housing, and the magnet can be removed from the power strip when it is not needed. A magnet with not hinder not protrude from the surface can be temporarily fixed firmly strip body by directly magnetically attached to a steel desk or cabinet. Also, if the cable needs to be replaced because the length does not match, the cable can be easily removed from the harness plug by operating the operation handle, and the core wire of the replaced cable is inserted from the wire insertion port. With only the core wire elastically clamped between the chain spring and the contact piece, the cable can be connected to the harness plug, the reconnection work can be performed easily, and the cable can be easily removed from the harness plug by the operation handle be able to.

According to a second aspect of the present invention, in the first aspect of the present invention, the operation handle of the harness plug is formed to have a size that can be manually operated. The cable can be easily removed from the harness plug without using a tool or the like. According to a third aspect of the present invention, in the first aspect of the present invention, the magnet is formed by overlapping and fixing the yoke on the magnet body, and the mounting claws are projected from the yoke and the mounting claws are engaged with the table tap body. The magnet is detachably attached to the power strip main body by combining the magnets, and in addition to the function of claim 1, the magnet is mounted on the power tap main body by engaging means using mounting claws provided on the yoke. Can be easily attached and detached.

According to a fourth aspect of the present invention, in the first aspect of the present invention, mounting claws are protrudingly provided on one side end and the other side end of the magnet, respectively. An engaging hole is provided in the side end and an elastically displaceable engaging claw is provided in the other side end of the housing recess. The magnet is housed in the housing recess, and a mounting claw on one side end of the magnet is provided. Is inserted into and engaged with the engaging hole, and the mounting claw on the other side end of the magnet is detachably engaged with the engaging claw, in addition to the function of claim 1, By elastically displacing the engagement claws, the engagement between the engagement claws and the mounting claws and the disengagement thereof can be easily performed, and the operation of attaching and detaching the magnet is simplified.

According to a fifth aspect of the present invention, in order to achieve the above object, a power space is provided between a floor base material and a floor material laid at appropriate intervals on the floor base material. Used in an indoor wiring system in which a wiring network is formed by wiring a main line and detachably connecting a wiring device to a branch connection portion of a branch connection device provided at an appropriate position on the main line, and inserting one or more plug blades A table tap body including a blade and a blade receiving bracket corresponding to the blade insertion port, a cable having a plurality of cores electrically connected to the blade receiving bracket in the table tap body, and a branch provided at the end of the cable A harness plug coupled to the branch connection portion of the connection device, wherein a recess for accommodating the magnet is recessed on the back of the table tap body, and the surface of the magnet is the table tap in the recess. A magnet is detachably attached so as to be substantially flush with the back of the body, and the harness plug has a recess formed in the front surface of the housing in which the branch connection portion of the branch connection device is fitted. The front ends of the plurality of blades each having a core wire connected to the base end face, and form cable insertion ports for inserting the core wires of the cables at the rear end of the housing, respectively, and are inserted from the cable insertion ports. A contact piece that is in contact with the core wire of the cable is formed at the base end of each of the blades, a plurality of lock springs that elastically clamp the core wire between these contact pieces, and this lock spring is pushed away from the contact piece. A release button for releasing the elastic holding state of the core wire, and a display unit for displaying electric characteristics and applications on the side surface of the housing of the harness plug. It can be removed from the main body of the tap, the magnet does not protrude from the back of the table tap body, it does not get in the way, and the magnet is directly magnetized to the steel desk or cabinet and the table tap body is temporarily fixed firmly can do. In addition, information necessary for electric wiring such as electric characteristics and use of the table tap having the harness plug can be notified from the display unit.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, a magnet is formed by overlapping and fixing a yoke on the magnet body, and a mounting claw is projected from the yoke and mounted on the table tap body. The magnet is detachably attached to the power strip body by engaging a claw, and in addition to the function of claim 5, the magnet is attached to the power strip body by an engagement means using a mounting claw provided on the yoke. Can be attached,
Installation and removal of magnets becomes easier.

According to a seventh aspect of the present invention, in the invention of the fifth aspect, mounting claws are protrudingly provided on one side end and the other side end of the magnet, respectively. An engaging hole is provided in the side end and an elastically displaceable engaging claw is provided in the other side end of the housing recess. The magnet is housed in the housing recess, and a mounting claw on one side end of the magnet is provided. Is inserted into and engaged with the engaging hole, and the mounting claw on the other side end of the magnet is detachably engaged with the engaging claw. By elastically displacing the engagement claws, the engagement between the engagement claws and the mounting claws and the disengagement thereof can be easily performed, and the operation of attaching and detaching the magnet is simplified.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. The table tap according to the present embodiment includes a table tap main body 1 and a cable 37.
And a harness plug 11. The table tap body 1 is formed by joining a cover 38 and a body 38 of a synthetic resin molded product as shown in FIGS. 2 (a), 2 (b) and 3 (b).
As shown in FIG. 3A and FIG. 3A, the blade 38 is provided with a plurality of blade insertion holes 40 at a plurality of positions. The table tap main body 1 has a built-in blade receiving bracket, a terminal fitting, etc. corresponding to the blade insertion port 40, and a cable 37 having a harness plug 11 attached to the end thereof is inserted into the table tap main body 1 at one end. It is introduced from the section and connected to the terminal fitting. A flange piece 41 is protruded from one end or both ends of the table tap main body 1, and a hole 42 for temporarily fixing the table tap to a wall or the like by being hooked on a screw or the like is formed in the flange piece 41. It is provided.

FIG. 2 shows a rear view of the table tap body 1.
As shown in (b), the accommodation recess 3 is provided in the vicinity of one end and the other end. The housing recess 3 is opened in a rectangular shape, and one end in the longitudinal direction is formed as a slightly wider operation recess 43. This operation recess 43
As shown in FIGS. 7 and 8, an elastic plate piece 44 is integrally protruded from the bottom toward the opening side.
A pair of engaging claws 9 are integrally provided protruding from the inside of the distal end portion. The outer surface of the engaging claw 9 is formed on an inclined surface 9a. The elastic plate piece 44 is formed at a distance from the inner wall surface of the operation concave portion 43, and elastically bends and deforms in the thickness direction as shown in FIG. It is designed to be elastically displaceable. Inside the base of the elastic plate piece 44, a jig insertion hole 45 as shown in FIG. An engaging hole 8 is provided near the bottom at the other end of the accommodation recess 3 in the longitudinal direction, as shown in FIG. A guide groove 46 is recessed on the bottom surface.

As the magnet 2, a magnet formed of only a magnet can be used, but as shown in FIGS. 5 and 6, a yoke 5 is superposed and fixed on a magnet body 4 which is a magnet itself to form a block. I used it. The magnet element 4 is formed in a flat rectangular parallelepiped as shown in FIG. 5B. A yoke 5 made of a magnetic metal plate such as a steel plate and having a U-shaped cross section is put on the magnet element 4, and the magnet element 4 is formed. As shown in FIG. 6, a tubular rivet-shaped stud 49 is inserted into through holes 47 and 48 provided in the center of the yoke 5, respectively.
By caulking as shown in (d), the yoke 5 is fixed to the magnet element 4, and the yoke 5 is fixed to the magnet body 4 as shown in FIGS.
Block-like magnets 2 as shown in FIGS. 1B and 1C can be formed. The swaged pieces 49a, 49b of the tack 49
Are through holes 47 of the magnet body 4 and the yoke 5, respectively.
The recesses 48 are accommodated in concave steps 47a and 48a on the periphery.

As shown in FIGS. 5 and 6, at one end of the magnet 2 in the longitudinal direction, a mounting claw 6 is integrally formed at the center of the yoke 5 so as to protrude therefrom. At the other end in the longitudinal direction, mounting claws 7, 7 are integrally protruded from both ends of the yoke 5, respectively. The tip of the mounting claw 7 is formed as an inclined surface 7a. As described above, the use of the yoke 5 makes it possible to form the mounting claws 6 and 7 on the magnet 2.

The magnet 2 formed as described above can be fitted and mounted in the accommodating recess 3 of the power strip main body 1. That is, first, one end of the magnet 2 is inserted into the accommodation recess 3 and FIG.
As shown in (b), the mounting claws 6 are inserted into the engaging holes 8 and engaged. At this time, the insertion of the mounting claw 6 into the engagement hole 8 is smoothly performed by being guided by the guide groove 46. Next, when the other end of the magnet 2 is pushed into the accommodation recess 3,
The inclined surface 9a of the engaging claw 9 is pressed by the inclined surface 7a of the mounting claw 7, and the elastic claw 44 elastically bends in the opposite direction to the magnet 2 as shown in FIG. Displaced,
As shown in FIG. 7A, the mounting claws 7 are engaged with the engaging claws 9. In this manner, the insertion recess of the mounting claw 6 into the engaging hole 8 and the hooking engagement of the mounting claw 7 with the engaging claw 9 as shown in FIG. 1 and FIG. 3 and the magnet 2 can be attached thereto.

The magnet 2 is accommodated in the accommodating recess 3 so that the surface of the magnet 2 and the back surface of the table tap main body 1 are substantially flush with each other, and is attached by the magnetic force of the magnet 2 as shown in FIG. In addition, the table tap main body 1 can be temporarily fixed to a side surface of a desk 12 or a cabinet formed of a member such as steel to which a magnet is attracted. In this way, the table tap body 1 is OA
By temporarily fixing it to the side of the desk 12 or cabinet where the equipment is installed, it becomes possible to wire the codes of the OA equipment neatly.

When the temporary fixing is not performed by the magnet 2 or when it is necessary to avoid an adverse effect due to the magnetic force of the magnet 2, the magnet 2 is removed from the housing recess 3 of the power tap main body 1. be able to. The detaching operation is performed by inserting the tip of the jig 26 such as a screwdriver between the end of the magnet 2 and the elastic plate piece 44 between the pair of engaging claws 9 as shown in FIG. Further, the tip of the jig 26 is inserted into the jig insertion hole 19.
Jig 26 inserted into jig insertion hole 45
By rotating the jig 26 as shown by the arrow with the tip of the fulcrum as a fulcrum, the elastic plate piece 44 is elastically bent to the opposite side to the magnet 2 as shown in FIG. It can be performed by displacing and disengaging the attachment claw 7 from the engagement claw 9. When the engagement between the attachment claw 7 and the engagement claw 9 is released, the insertion engagement of the attachment claw 7 into the engagement hole 8 is automatically disengaged, and the magnet 2 can be taken out of the housing recess 3. Thus, the magnet 2 can be easily removed using the jig 26 such as a screwdriver.

On the other hand, the harness plug 11 is detachably connected to a branch connection device such as the joint box 10 used in the indoor wiring system described in the related art. As shown in FIG. 9, the harness plug 11 has a concave portion 14 formed on the front surface of the housing 13 for fitting with a connector portion 30 of the joint box 10 described later. A plurality of blades 15 are disposed with their tips facing the opening of the recess 14.

The housing 13 of the harness plug 11 is
As shown in FIG. 9, it is composed of a body 13a and a cover 13b. The body 13a is formed in a substantially box shape having an open upper surface and a front surface. The inside is separated into front and rear spaces by a partition, and a recess 14 formed in a front portion into which the connector portion 30 of the joint box 10 is inserted. Are formed. The partition has a fixing portion for press-fitting and fixing the three blades 15. When the blade 15 is attached to the fixing portion, the tips of the blades 15 are arranged in a row in the recess 14. Will be. And the internal space behind the body 13a is
The body 13a is further divided into three sections by two partitions running along the longitudinal direction of the body 13a, and the blade 15 is housed in each section. A cover 13b is provided on the rear end of the body 13a.
In this state, three concave portions serving as the wire insertion ports 19 are formed. Each concave portion has a small diameter inside the electric wire insertion port 19 and is formed in a shape that can reliably position the core wire of the cable 37 inserted into the electric wire insertion port 19.

The blade 15 is formed of a conductive material into a plate shape.
The base is bent so as to be in contact with one inner surface of each section, and a contact piece 15a is formed on the lower surface of the base at least laterally from at least the cover 13b side so that the core wire of the cable 37 comes into contact. Also, from the lower surface of the central portion of the blade 15, the body 13a
A pair of temporary fixing pieces 15b, which are temporary fixing portions for positioning and temporarily fixing, are protruded. As shown in FIG. 9, ribs 55 project from the bottom surface of the body 13a corresponding to the temporary fixing pieces 15b in the respective sections separated by the partition walls, and the ribs 55 are opposed to the respective temporary fixing pieces 15b. The blade 15 is temporarily fixed to the body 13a by press-fitting into a nail formed at the inner end. In addition, a temporary fixing piece composed of projections having claws formed at both lower ends is formed on the plug blade 15, and a rib composed of two ridges is formed on the inner bottom surface of the body 13 a, and temporarily fixed between the ribs. The pieces may be fitted.

Incidentally, of the three blades 15, the blade to which the grounding core of the cable 37 is connected is longer than the other blades so as to protrude slightly ahead of the other blades, or is attached to the front. Has become. This is because when another blade is connected to the blade receiving spring of the joint box 10, the blade first connected to the ground wire is connected to the joint box 10.
Is connected to the blade receiving spring, and conversely, at the time of removal, the plug blade to which the ground wire is connected comes off last so as to ensure safety.

The core of the cable 37 is elastically pressed against the contact piece 15a between the contact piece 15a of each of the blades 15 and the rear end of each of the three sections of the body 13a. The lock spring 20 is arranged. The cover 13b is formed in a substantially box shape whose inner structure is substantially the same as that of the body 13a and has a lower surface and a front surface opened, and has an insertion hole formed at two locations on the upper surface for inserting a rivet. , A rivet 27 is inserted into the insertion hole and the insertion hole formed in the body 13a corresponding to the insertion hole, and the tip is swaged to form the body 13a.
And a cover 13b.

On the inner bottom surface of the concave portion of the cover 13b forming the concave portion 14 together with the concave portion of the body 13a, a connector portion 3 which fits into a reverse insertion preventing groove of the joint box 10 described later.
A ridge 2 as an erroneous connection prevention part that runs along the insertion direction of 0
2 are formed to prevent reverse connection or erroneous connection of joint boxes 10 having different ratings and uses.

Here, in order to prevent this kind of harness plug 11 from coming off from the joint box 10, as shown in FIG. 11, the harness plug 11 is locked and released in a locking groove 35 formed in the joint box 10. A lock body 23 is provided which is formed of a flexible material such as a synthetic resin to be locked, and the lock body 23 is provided on the cover 13b side. In the case of a conventional joint box or harness plug of this type, the lock body 2 is also provided on the body side.
Although the same thing as that of No. 3 was provided, the shape of the harness plug becomes large in this case.
The lock body 23 is provided only on the b side to reduce the size of the harness plug 10.

In order to attach the lock body 23 to the cover 13b, the center of the upper surface of the cover 13b is recessed,
An attachment portion 24 for the lock body 23 is formed. An opening is formed at a portion corresponding to the concave portion of the mounting portion 24, and the locking claw 23a of the lock body 23 projects into the concave portion 14 from this opening. The lock body 2 is located at the rear of the opening.
3 is formed with a fixing portion. Here, a fixing piece having a substantially L-shaped cross section is suspended from the center lower surface of the lock body 23, and two fixing claw pieces 23c elastically locked to the cover 13b are suspended from the lower surface of the fixing piece. It is. A locking piece that elastically locks to the cover 13b is formed above the distal end surface where the locking claw 23a is formed. A non-slip 23d formed of a plurality of laterally running ridges is formed on the upper surface operated by a finger when the lock body 23 is released.

Cover 13 to which lock body 23 is attached
In the mounting portion 24b, an insertion hole for inserting the fixing claw 23c is formed in the fixing portion, and the locking member 23 is attached to the mounting portion 24 by locking the fixing claw 23c in the insertion hole. Can be The rear portion of the fixing portion is formed larger than the pressing operation portion 23d of the lock body 23 so that the pressing operation portion 23d can be pressed by a finger. That is, when the pressing operation portion 23d of the lock body 23 is pressed down, the locking claw 23a rotates upward with the fixing piece 23b as a fulcrum, and the locking claw 23a is locked by the locking groove of the connector portion 30 of the joint box 10. 35, so that the harness plug 11 can be removed from the joint box 10.

The attachment of the lock body 23 to the attachment portion 24 is performed as follows. First, the fixed claw piece 2 of the lock body 23
3c is inserted into the insertion hole, and then the elastic piece 23b is placed on the fixed part such that the rear end face is locked to the step part behind the fixed part, so that the elastic piece 23b is formed on the front surface below the fixed claw piece 23c. The claws are locked to the opening edge inside the insertion hole so that the cover 1
3b. Here, in the case of the present embodiment, the distance between the rear end surface of the fixing piece 23b and the front surface of the base of the fixing claw piece 23c is larger than the distance between the step at the rear end of the fixing portion and the opening edge on the front side of the insertion hole. To the fixing piece 23
A forward elastic force is applied to the horizontal piece b by the step of the fixing portion, so that the fixing claw piece 23c is securely locked. Further, a projection is formed behind the partition of the body 13a, and when the cover 13b to which the lock body 23 is temporarily fixed is attached to the body 13a, a gap is formed between the projection and the partition of the cover 13b corresponding to the partition of the body 13a. The lower part of the fixed claw piece 23c is clamped so that the lock body 23 is permanently fixed. That is, in the present embodiment, the fixing piece 23b and the fixing claw piece 23c serve as a fixing part of the lock body 23, and the fixing part and the insertion hole elastically fit the fixing part of the lock body 23 into and out of the lock body. The partition 23 and the protrusion serve as a temporary fixing portion for temporarily fixing the body 23, and serve as a holding portion for holding the fixing portion of the lock body 23 when the body 13a and the cover 13b are combined.

The cover 13b is attached to the body 13
When the release button block 21 is attached to the position a, the release button block 21 is placed in a position corresponding to a quick connection portion of an electric wire (core wire of the cable 37) including the lock spring 20 and the contact piece 15a. Release button block 21
Release portions 21a for simultaneously releasing the lock springs 20 from the corresponding contact pieces 15a to release the elastic clamping state of the core wire.
And an operation handle 21b extending from one edge of the release portion 21a and exposed on the surface of the cover 13b through an opening provided at the rear end of the cover 13b. Is formed. When the operating handle 21b is pressed down, the release portion 21a is rotated by the pushing operation of the operating handle 21b, the lock spring 20 is pushed and deflected away from the contact piece 15a, and the elastic locking state of the core wire is released.

As shown in FIGS. 9 and 11, a concave portion 51 is formed on the surface of the cover 13b corresponding to the concave portion, and a card 52 describing the rating and use of the joint box 10 is formed in the concave portion 51. The card 5 is provided with a transparent cover 53 formed at both end edges with locking grooves formed on both end surfaces of the concave portion 51 and locking pieces for locking and releasing.
2, the rating and the use of the joint box 10 can be easily read from the card 52. In the harness plug 11, the body 13a and the cover 13b are fixed with two rivets, and the rear end of the cover 13b is formed as a flat surface.

Next, the joint box 10 into which the harness plug 11 is inserted will be described. The joint box 10 has a connector part 30 formed on the front surface thereof, which is inserted into the concave part 14 of the harness plug 11 on the insertion side, and a harness plug inserted from a blade insertion opening 31 formed on the front surface of the connector part 30. It has a structure in which a plurality of blade receiving springs respectively receiving the 11 blades 15 are provided.

As shown in FIG. 10, the housing 33 of the joint box 10 is composed of a body 33a and a cover 33b, and four holes on the upper surface of the cover 33b are formed with through holes through which rivets are inserted. An insertion hole for inserting a rivet is formed in the body 33a corresponding to this insertion hole, and a cover 33b is attached to the body 33a by caulking the tip of the rivet inserted in the insertion hole. is there.

The body 33a is formed in a substantially box shape with an open upper surface, and a front storage portion serving as the connector portion 30 in a state combined with the cover 33b has two partitions running along the longitudinal direction of the body 33a. The partition is divided into three sections, and a blade receiving spring is housed in each section.
The partition is formed over substantially the entire length of the blade receiving spring from the front storage portion to the rear. In addition, a concave portion serving as a blade insertion port is formed in a front portion corresponding to each section. Also, in the case of this joint box 10,
At the rear end of the body 33a, a recess is formed between the lock spring and the contact piece as an electric wire insertion port for inserting the core wires 83a, 83b, 83c of the cable 83. In addition, each recess has a small diameter inside the electric wire insertion port, and is formed in a shape that can reliably position the core wire inserted into the electric wire insertion port.

The internal structure of the cover 33b is substantially the same as that of the body 33a. When the cover 33b is attached to the body 33a, the cover 33b corresponds to a quick connection portion of an electric wire composed of a lock spring and a contact piece. The release button block is stored in the place where the operation is performed. The release button block includes a release portion for simultaneously releasing the lock springs from the corresponding contact pieces to release the elastic pinching state of the core wire, and an opening extending from one edge of the release portion and provided at the rear end of the cover 33b. And an operation handle 57 exposed from the surface of the cover 33b.
Reference numeral 7 is formed in a size that can be manually operated. When the operation handle 57 is pushed down, the release portion is rotated by the pushing operation of the operation handle 57, and the lock spring is deflected in a direction away from the contact piece to release the elastic locking state of the core wire.

With the quick connection structure having the release function of the electric wire connection portion to the joint box 10 and the harness plug 11, if the cable length does not match and replacement is required, the release button block is operated. By doing so, the cable can be easily removed, and simply by inserting the replaced cable through the wire insertion port, the core is elastically clamped between the lock spring and the contact piece, and the cable can be connected.
Reconnection work is also facilitated, and cable replacement work can be performed extremely easily.

The connection of the harness plug 11 to the joint box 10 is performed by aligning the orientation of the recess 14 of the harness plug 11 with the connector 30 of the joint box 10 so that the ridge 22 fits into the reverse insertion preventing groove. 11 is pushed into the joint box 10, and the blade 1
5 is inserted into the blade insertion slot 31, and each blade 15 is connected to the blade receiving spring. At this time, the locking claw 23a of the lock body 23 is locked in the locking groove 35 to prevent the locking body 23 from coming off.

When removing the harness plug 11 from the joint box 10, the pressing operation portion 23d of the lock body 23 is pushed in, and the locking claw 23a of the lock body 23 is pressed.
And release the locking state between the locking groove 35 of the connector portion 30 and
The harness plug 11 may be pulled backward. When wiring is performed using the table tap having the above configuration, FIG.
As shown in FIG. 2, a free access floor is configured by placing a large number of substantially square unit floor materials 90 on supporting legs 92 erected on the floor substrate 91, and the floor substrate 91.
The space between the floor material 90 and the floor material 90 is used as a wiring space. In this wiring space, the main breaker 8 housed in the distribution board 81 is provided.
2 are connected. In addition, main line 83
Is connected to the joint box 10 at appropriate intervals.
Now, as shown in FIG. 12, in the power strip of the present embodiment, the power strip main body 1 is fixed to the side surface of the desk 12 formed of a member to which a magnet such as steel adsorbs, and is provided at the tip of a cable 37. Harness plug 1
1 is connected to the joint box 10 under the floor. As a result, the table tap can be connected to the trunk line 83 to solve the problem of wiring flooding. In addition, the table tap body 1 is magnetized directly to the steel desk 12 or cabinet by the magnet 2 on the back surface, and is firmly fixed. The table tap main body 1 can be temporarily fixed, and a display portion (card 52) is provided on the side surface of the housing of the harness plug 11, so that the card 52
The cable of the harness plug 11 in the access floor,
Removal work becomes easy.

[0037]

According to the first aspect of the present invention, a power trunk is wired in a wiring space formed between a floor material and a floor material laid at appropriate intervals on the floor material. Used in an indoor wiring system in which a wiring network is formed by detachably connecting a wiring device to a branch connection portion of a branch connection device provided at an appropriate location above, one or more blade insertion holes and a plurality of blade insertion holes. A table tap body having a blade receiving bracket corresponding to the above, a cable having a plurality of cores electrically connected to the blade receiving bracket in the table tap body, and a branch connecting portion of a branch connecting device provided at the end of the cable A harness plug coupled to the main body, and a recess for accommodating the magnet is formed in the back of the power strip main body, and the surface of the magnet is substantially flush with the back of the power tap body in the housing recess. The magnet is detachably attached to the harness plug, and the harness plug has a recess formed in the front surface of the housing in which the branch connection portion of the branch connection device is fitted. In the recess, a plurality of core wires of the cable are respectively connected to the base end. The distal ends of the plurality of blades face each other, and a cable insertion port is formed at the rear end of the housing to insert a cable core, respectively. A contact piece that comes into contact with the cable core inserted from the cable insertion port is formed. Formed at the base end of each of the blades,
A plurality of lock springs for elastically holding the core wire between these contact pieces, and a release button for releasing the lock state of the core wire by pushing the lock spring away from the contact piece to operate the release button The handle is exposed on the surface of the housing, so the magnet can be removed from the power strip when it is not needed. There is an effect that the table tap body can be temporarily fixed firmly by magnetically attaching it directly to a steel desk or cabinet. If the cable needs to be replaced because it does not match the length, the cable can be easily removed from the harness plug by operating the operating handle, and the core wire of the replaced cable is inserted through the wire insertion port. With only this, the core wire is elastically clamped between the chain spring and the contact piece, the cable can be connected to the harness plug, and the reconnection work can be performed easily,
There is an effect that the cable can be easily removed from the harness plug by the operation handle.

According to the second aspect of the present invention, since the operation handle of the harness plug is formed in a size that can be operated manually,
Since the operation handle can be operated by hand, there is an effect that the cable can be easily removed from the harness plug without using a special tool or the like. According to a third aspect of the present invention, a magnet is formed by stacking and fixing a yoke on a magnet body, a mounting claw is projected from the yoke, and the mounting claw is engaged with the table tap main body, thereby connecting the magnet to the table. Since it is detachably attached to the tap main body, in addition to the function of claim 1, the magnet can be attached to the table tap main body by means of the engaging claw provided on the yoke, and the magnet can be easily attached and detached. Has the effect of becoming

According to a fourth aspect of the present invention, a mounting claw is projected from one side end and the other side end of the magnet, and an engagement hole is formed in one side end of the accommodating recess of the power strip body. And an elastically displaceable engaging claw is provided in the other side end of the housing recess, the magnet is housed in the housing recess, and the mounting claw on one side end of the magnet is inserted into the engaging hole. And the engaging claw on the other side end of the magnet is detachably engaged with the engaging claw, so that the engaging claw is elastically displaced in addition to the function of claim 1. Accordingly, the engagement and disengagement between the engagement claw and the attachment claw can be easily performed, and the operation of attaching and detaching the magnet is simplified. According to a fifth aspect of the present invention, a power trunk is wired in a wiring space formed between a floor base material and a floor material laid at appropriate intervals on the floor base material, and is provided at an appropriate position on the main line. One or a plurality of blade insertion holes and a blade corresponding to the blade insertion hole used in an indoor wiring system in which a wiring network is formed by detachably connecting a wiring device to a branch connection part of a provided branch connection device. A table tap body having a receiving fitting, a cable having a plurality of cores electrically connected to the blade receiving fitting in the table tap body, and a harness provided at a distal end of the cable and coupled to a branch connecting portion of a branch connecting device. A recess for accommodating the magnet on the back of the power strip body, and removing the magnet so that the surface of the magnet is almost flush with the back of the power strip body in the housing recess A magnet is freely attached, and a harness plug has a plurality of recesses formed in the front surface of the housing, into which the branch connection portion of the branch connection device is fitted, and in which the plurality of core wires of the cable are respectively connected to the base end. The front end of the plug blade faces and forms a cable insertion port for inserting a cable core at the rear end of the housing, and the contact piece that comes into contact with the cable core inserted from the cable insertion port is connected to each of the above. A plurality of lock springs formed at the base end of the blade and elastically holding the core wire between the contact pieces, and a release button for releasing the lock state of the core wire by pushing the lock spring away from the contact pieces. Equipped with a display unit that displays the electrical characteristics and applications on the side of the housing of the harness plug, the magnet can be removed from the power strip when it is not needed.
There is an effect that the magnet does not protrude from the back surface of the power strip main body and does not get in the way, and the magnet can be magnetically magnetized directly to a steel desk or cabinet to temporarily fix the power tap main body firmly.
Further, there is an effect that information necessary for electric wiring such as electric characteristics and use of the power strip having the harness plug can be notified from the display unit.

According to a sixth aspect of the present invention, a magnet is formed by overlapping and fixing a yoke on a magnet body.
The magnet is removably attached to the power strip body by projecting the mounting hook on the yoke and engaging the power hook with the power strip body.
In addition to the effect of the fifth aspect, the magnet can be attached to the power strip main body by the engagement means using the attachment claws provided on the yoke, and there is an effect that the attachment and detachment of the magnet become easy.

According to a seventh aspect of the present invention, a mounting claw is projected from one side end and the other side end of the magnet, and an engagement hole is formed in one side end of the accommodating recess of the power strip body. And an elastically displaceable engaging claw is provided in the other side end of the housing recess, the magnet is housed in the housing recess, and the mounting claw on one side end of the magnet is inserted into the engaging hole. In addition to the function of claim 5, the mounting claw is removably engaged with the engaging claw on the other side end of the magnet, so that the engaging claw is elastically displaced. Accordingly, the engagement and disengagement between the engagement claw and the attachment claw can be easily performed, and the operation of attaching and detaching the magnet is simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 shows a table tap body according to the first embodiment;
(A) is a perspective view seen from the front side, and (b) is a perspective view seen from the back side with the magnet removed.

FIG. 3 shows a table tap body according to the first embodiment;
(A) is a front view, (b) is a side view, and (c) is a rear view.

FIG. 4 is a partially omitted perspective view showing a state in which the table tap body is fixed.

5A and 5B show a magnet attached to the table tap main body, and FIG. 5A is an enlarged perspective view.
(B) is an enlarged exploded perspective view.

6A and 6B show a magnet attached to the table tap main body, in which FIG. 6A is an enlarged plan view,
(B) is an enlarged front view, (c) is an enlarged side view,
(D) is a further enlarged sectional view of the line II in (b).

7 (a) and 7 (b) are enlarged sectional views, respectively, and FIG. 7 (c) is a sectional view showing a portion b in FIG. 7 (b). It is.

FIG. 8 shows a part of the table tap main body of the above, and (a) and (b) are enlarged perspective views, respectively.

FIG. 9 is a cross-sectional view of the same harness plug.

FIG. 10 is a perspective view showing a state in which the harness plug is connected to a joint box.

FIG. 11 is an explanatory view showing attachment and detachment of a harness plug to and from the joint box in the above.

FIG. 12 is a perspective view illustrating a configuration example of an indoor wiring system using the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Table tap main body 2 Magnet 3 Housing recess 4 Magnet element 5 Yoke 6 Attachment claw 7 Attachment claw 8 Engagement hole 9 Engagement claw 10 Joint box 11 Harness plug 15 Plug blade 20 Lock spring 21 Release button block 23 Lock Body 35 Engagement groove 37 Cable 43 Operation concave part 44 Elastic plate piece 51 Recess 52 Card 53 Cover

Claims (7)

[Claims] 1. A main line for power is wired in a wiring space formed between an underfloor material and a floor material laid at appropriate intervals on the underfloor material, and provided at an appropriate position on the main line. Used in an indoor wiring system in which a wiring network is formed by detachably connecting a wiring device to a branch connection portion of a branch connection device,
A table tap body including one or more blade insertion holes and a blade receiving bracket corresponding to the blade insertion port, a cable having a plurality of cores electrically connected to the blade receiving bracket in the table tap body, and A harness plug provided at the end of the cable and coupled to a branch connection portion of the branch connection device; a housing recess for housing the magnet is recessed on the back of the power strip main body; A detachable magnet is attached so that it is almost flush with the back of the power strip main body, and the harness plug has a recess formed in the front surface of the housing in which the branch connection portion of the branch connection device is fitted. The distal ends of a plurality of blades, each having a plurality of core wires connected to a base end thereof, face each other, and the cable core wires are respectively inserted into rear ends of the housing. A plurality of contact pieces which are formed at the base end of each of the blades and which are elastically sandwiched between the contact pieces and the contact pieces. And a release button for pushing the lock spring away from the contact piece to release the elastic pinching state of the core wire, and an operation handle for operating the release button is exposed on the surface of the housing. Table tap characterized by the following. 2. The table tap according to claim 1, wherein the operation handle of the harness plug is formed in a size operable manually. 3. A magnet is formed by stacking and fixing a yoke on a magnet body, and a mounting claw is projected from the yoke and the mounting claw is engaged with the table tap body to connect the magnet to the table tap body. The table tap according to claim 1, wherein the table tap is detachably attached to the table. 4. A mounting claw is projected from one side end and the other side end of the magnet, and an engagement hole is provided in one side end of the accommodating recess of the table tap main body. An elastically displaceable engagement claw is provided in the other side end of the place,
The magnet is accommodated in the accommodating recess, and the mounting claw on one side end of the magnet is inserted into and engaged with the engaging hole, and the mounting claw on the other side end of the magnet is detachably engageable with the engaging claw. The table tap according to claim 1, wherein the table tap is engaged with the table tap. 5. A main line for power is wired in a wiring space formed between a floor base material and a floor material laid at appropriate intervals on the floor base material, and is provided at an appropriate position on the main line. Used in an indoor wiring system in which a wiring network is formed by detachably connecting a wiring device to a branch connection portion of a branch connection device,
A table tap body including one or more blade insertion holes and a blade receiving bracket corresponding to the blade insertion port, a cable having a plurality of cores electrically connected to the blade receiving bracket in the table tap body, and A harness plug provided at the end of the cable and coupled to a branch connection portion of the branch connection device; a housing recess for housing the magnet is recessed on the back of the power strip main body; A detachable magnet is attached so that it is almost flush with the back of the power strip main body, and the harness plug has a recess formed in the front surface of the housing in which the branch connection portion of the branch connection device is fitted. The distal ends of a plurality of blades, each having a plurality of core wires connected to a base end thereof, face each other, and the cable core wires are respectively inserted into rear ends of the housing. A plurality of contact pieces which are formed at the base end of each of the blades and which are elastically sandwiched between the contact pieces and the contact pieces. And a release button for releasing the lock spring from the contact piece by pressing the lock spring away from the contact piece, and a display portion for displaying electrical characteristics and applications is provided on a side surface of the housing of the harness plug. A table tap characterized by the following. 6. A magnet is formed by laminating a yoke on a magnet body, and a mounting claw is projected from the yoke and the mounting claw is engaged with the table tap body to thereby connect the magnet to the table tap body. The table tap according to claim 5, wherein the table tap is detachably attached to the table tap. 7. A magnet is provided with a mounting claw protruding from one side end and the other side end of the magnet, and an engagement hole is provided in one side end of the accommodating recess of the table tap main body. An elastically displaceable engagement claw is provided in the other side end of the place,
The magnet is accommodated in the accommodating recess, and the mounting claw on one side end of the magnet is inserted into and engaged with the engaging hole, and the mounting claw on the other side end of the magnet is detachably engageable with the engaging claw. The table tap according to claim 5, wherein the table tap is engaged with the table tap.